In my opinion, the pony tail girl, 中山花鈴 (Nakayama Karin?), is the best dancer of the three. Although the short cut hair girl is the center spot, but you can't avoid tracking your eyes to the pony tail girl because her expression, action/acting, dance movement is really well done. You can really FEEL she's really enjoying the dance through the screen. It's not saying the other two girls are not great dancers, but the pony tail girl is even better.